Pipe coupling



Aug. 25, 1931. E. E. HEWETT 0 PIPE COUPLING Filed Ndv, 25. 1928 INVENTOR 5 1.5 E. HEWITT 16 27 a7 28 7 WW ATTOR EY Patented Aug. .25, 1931 UNITED STATES arms a. inwrrr, or monwoon, rmmmvma. assrcnon are run wris rmorronsn or wrnrrnnnmo, rnnnsnvnnm, a coaroaarron or I AIR BRAKE :COII'AKY. PENNSYLVANIA.

PATENT OFFICE. A

PIPE COUPLING Application fled November 28, 1928. Serial No. 821,882.

This invention relates to pipe couplings.

and more particularly to couplings of the type by which various sizes of pipes may be coupled to the conduits of engines or-other kinds of machines and devices.

An object of the invention is to'provide' tion, arrangement and combination of the several parts of which it is composed, as will be hereinafter more fully described and claimed.

In the accompanying drawings; Fig. l is a section showing the manner of coupling one form of pipe to the outlet openings or conduit of a machine; and Fig. 2 is a view.

similar to Fi 1 showing the manner of couplinganot er size and difierent type of pipe to the same outlet passage.

nterchangeable couplings of the character herein described can be used to couple so either brass and other pipes having flared or conical ends to the outlet opemn of air compressors, engines, or other mac so or devices, or to couple other kinds of pipes of diflerent diameters to the outlet openings.

86 Referring to the drawings, the member 5.

which may illustrate a portion of an air compressor or other engine or machine has nular groove or 7..

a or conduit 6 which is enlargedat the face of the member to provide an- Mounted in the groove 7 is a, seat ring a uniform diameter.-

8 having an inner di' qmt0 the n Theouter of the ring yond the face of the member 5, and this so portion of the ring is formed with an area- 16 of a gland'orlnnt 17.

to provide an enlarged conical seat 11 which is adapted to'bear against the seat 9.

Encircling the pipe is a collar or. thimble 12 having an interior surface correspondin substantially in form to the exterior o the end portion of the pipe. The collar 12 has a skirt 13 for' embracing the pogtion of the pipe to the rear of its flared en a The front portion of the collar 12 is en-. larged to provide a rim or flange 14, which rim is, onsone side, grooved to provide a seat 15 for the inwardly extending flange The portion of the nut 17' on the side opposite to the flange 16 is internally screwthreaded at 18 for engaging the screws against-the seat ring 8, thereby efiectually sealing the joint between the pipe and the riIigGS.

ferring now to Fig. 2, when a pipe 21, having an'mternal diameter corresponding approximately to the diameter of the pas ,sage 6 of the member 5, is to be=connected to the member, the pipe .is provided with a collar 22 which is interiorly screw-threaded at for mounting on the screw-threaded b '6, so that when the I rts are ammbl d portlon 24 of the PIPE i will have cess 27 in which is mounted a ring 28. The

ring 28 has an internal beveled face 29 to provide a conical seat for engaging the seat 9 of the ring 8 in a manner similar to that 1n which the portion 11 of the pipe 10 engages this seat of the ring'8.

It will be noticed that either form of pipe can be coupled to the member 5 without the necessity of substituting another ring for' the ring 8, or another securing member for the nut 17. Furthermore, the mouths of the 1 pipes are provided with conical seats for engaging the seat 9- 0f the ring 8, and in both instances the flange 16 of the nut engages a shoulder formed on a collar, so that when the threads of the nut are engaged with the threads of the member 5 and the nut turned, the collar will be drawn towards the member, thereby forcing the conical pipe seat tightly against the seat ring to seal the joint therebetween.

While one illustrative embodiment of the invention has been described in detail, it is not my intention to limit its scope to that embodiment or otherwise than by the terms of the appended claim.

Having now described my invention, what I I claim as new and desire to secure by Letters Patent, is

A pipe coupling comprising a member provided with an opening which is enlarged at the face of the member to provide a rectangular recess, a seat ring mounted in said recess and projecting beyond the face of the member, said seat ring having an areuate contact face on the outer face thereof, the seat ring and the member constituting a unitary structure whereby the coupling is made interchangeable for use with different types of pipes, a pipe section adapted to be coupled to said member and having an internal conical seat at its mouthfor engaging the arcuate face of said seat ring, a collar encircling the pipe section, said collar having an out-turned flange, and a' nut threaded to' the member and having an inturned flange for embracing the flange of the collar.

In testimony whereof I have hereunto set my hand,this 22nd day of November, 1928.

ELLIS E. HEWITT. 

